E.R.W Carbon Black/Galvanized Steel Pipe & Tube 1. Specification : G3444, 3445, 3446, 3452, 3454, 8305, ANSI C80.1, ASTM A53A/53B, BS1387, BS1967, API 5L, 5CT, E.M.T. 2. Size Range: Pipe : 1"/2.0mm~20" x 16mm Tubing : 5/8" x 0.9mm ~2" x 2.75mm SQ Tubing : 5/8" x 5/8"(06mm x 16mm)x 1.2mm~6" x 6" (150mm x 150mm) x 6.0mm API Pipe : 2"~60" 2. Copper Brazed carbon steel pipe used for condenser and refrigerator ASTM A254 OD 8mm, 4.76mm or 3.05mm x WT 0.7mm